VPN Industry is huge. Is it worth to invest in VPN industry?
VPN = Virtual Private Network
What would be your USP?
This is too vague. Are you an investor asking about the space or a business considering adding a product to your suite? Is this enterprise VPN or consumer VPN. What difference do you think you or your target bring to either space that provides a competitive advantage as @Simon asks?
USP is speed and great VPN Client Mobile App.
Following is my VPN iOS App
I have built my own VPN iOS App
It is a consumer VPN
There are a lot of products on the current VPN market. Mullvad is one of them, it's an interesting solution really, here's an article on it from this site You can get acquainted with all the modern solutions and conditions the providers offer to their clients.
I’ve noticed there was a venture into decentralized VPNs; with conventional VPNs, many of the addresses have been picked up a “blacklisted” making it difficult to gain access to certain content. dVPNs use the addresses of everyday users which wouldn’t normally be flagged by content bearing sites. Check out Privatix.io